This is an Audio Unit (For Apple) plugin for use with Music Recording Software (DAW’s) such as Apples Logic. It’s pretty basic tremolo you can use for a cool effect.
To install:
Click on finder
Click on go
Click on go to folder
Go to: /Library/Audio/Plug-Ins/Components/
Paste the plugin in there.
The plugin comes in a zip file you will need to unzip it.